When I first opened my pool this year, the water was a little cloudy. I maintained my chem levels & filtered 24/7 for almost a week to no avail. I then decided to change my sand & switch to zeolite. After the switch, my water was crystal clear in less than 2 days.

The only drawback I see to it is that I was told not to add anything through the skimmer so everything will have to be dumped straight into the pool.